javasnack.snacks.xml.sax2.DebugPrinter.java Source code

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Here is the source code for javasnack.snacks.xml.sax2.DebugPrinter.java

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/*
 * Copyright 2013 "Masahiko Sakamoto" <sakamoto.gsyc.3s@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package javasnack.snacks.xml.sax2;

import java.util.Formatter;

import org.apache.commons.lang3.StringUtils;
import org.xml.sax.SAXParseException;

/**
 * Tiny "printf" shortcuts, variable arguments demo :)
 * 
 * @see http://www.ne.jp/asahi/hishidama/home/tech/java/varargs.html
 * @see http://www.javainthebox.net/laboratory/J2SE1.5/LangSpec/Varargs/Varargs.html
 * @see http://news.mynavi.jp/column/java/008/index.html
 */
class DebugPrinter {
    int indent = 0;

    @SuppressWarnings("resource")
    void start(String f, Object... args) {
        indent++;
        String s = new Formatter().format(f, args).toString();
        System.out.println(StringUtils.repeat(">", indent) + " " + s);
    }

    @SuppressWarnings("resource")
    void print(String f, Object... args) {
        String s = new Formatter().format(f, args).toString();
        System.out.println(StringUtils.repeat(">", indent) + " " + s);
    }

    @SuppressWarnings("resource")
    void end(String f, Object... args) {
        String s = new Formatter().format(f, args).toString();
        System.out.println(StringUtils.repeat("<", indent) + " " + s);
        indent--;
    }

    @SuppressWarnings("resource")
    void oops(String f, Object... args) {
        String s = new Formatter().format(f, args).toString();
        System.err.println(s);
    }

    void saxerr(String level, SAXParseException e) {
        oops("%s : SAXParserException(line:%d, column:%d, publicId:%s, systemId:%s)", level, e.getLineNumber(),
                e.getColumnNumber(), e.getPublicId(), e.getSystemId());
        oops(e.toString());
        oops("...continue");
    }
}